Boiler Black vs Natural Steel

How close are they?

ΔE 9.2, close: similar, with a visible difference side by side. Natural Steel is more saturated than Boiler Black.

Can I use Natural Steel instead of Boiler Black?

Usually, if you are not matching paint already on the model. Close match (ΔE 9). Natural Steel is more saturated than Boiler Black.

Can I use Boiler Black instead of Natural Steel?

The same difference applies the other way round: Boiler Black is more muted.

ΔE is the colour difference between our two swatch estimates: under about 6 is close, over about 15 is loose. Real paints also differ in finish, coverage and how they thin, so test before you commit.